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Refactor: Internals: Moved Navigation functions in imgui.cpp in their own section (moved NavUpdate which would not diff properly unless empty lines were removed, hence the previous patch). (part 5) (#2036, #787)

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docking
omar 6 years ago
parent 73052dc00c
commit 84eb2682b7
1 changed files with 247 additions and 249 deletions
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496
imgui.cpp
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@ -2962,254 +2962,6 @@ static void NavScrollToBringItemIntoView(ImGuiWindow* window, const ImRect& item
} }
} }
static void ImGui::NavUpdate()
{
ImGuiContext& g = *GImGui;
g.IO.WantSetMousePos = false;
#if 0
if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
#endif
// Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
if (nav_gamepad_active)
if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
g.NavInputSource = ImGuiInputSource_NavGamepad;
// Update Keyboard->Nav inputs mapping
if (nav_keyboard_active)
{
#define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
NAV_MAP_KEY(ImGuiKey_Space, ImGuiNavInput_Activate );
NAV_MAP_KEY(ImGuiKey_Enter, ImGuiNavInput_Input );
NAV_MAP_KEY(ImGuiKey_Escape, ImGuiNavInput_Cancel );
NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
NAV_MAP_KEY(ImGuiKey_UpArrow, ImGuiNavInput_KeyUp_ );
NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
if (g.IO.KeyCtrl) g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
if (g.IO.KeyShift) g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
if (g.IO.KeyAlt) g.IO.NavInputs[ImGuiNavInput_KeyMenu_] = 1.0f;
#undef NAV_MAP_KEY
}
memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
// Process navigation init request (select first/default focus)
if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
{
// Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
IM_ASSERT(g.NavWindow);
if (g.NavInitRequestFromMove)
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
else
SetNavID(g.NavInitResultId, g.NavLayer);
g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
}
g.NavInitRequest = false;
g.NavInitRequestFromMove = false;
g.NavInitResultId = 0;
g.NavJustMovedToId = 0;
// Process navigation move request
if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
NavUpdateMoveResult();
// When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
{
IM_ASSERT(g.NavMoveRequest);
if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
g.NavDisableHighlight = false;
g.NavMoveRequestForward = ImGuiNavForward_None;
}
// Apply application mouse position movement, after we had a chance to process move request result.
if (g.NavMousePosDirty && g.NavIdIsAlive)
{
// Set mouse position given our knowledge of the navigated item position from last frame
if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
{
if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
{
g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
g.IO.WantSetMousePos = true;
}
}
g.NavMousePosDirty = false;
}
g.NavIdIsAlive = false;
g.NavJustTabbedId = 0;
IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
// Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
if (g.NavWindow)
NavSaveLastChildNavWindow(g.NavWindow);
if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
g.NavWindow->NavLastChildNavWindow = NULL;
// Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
NavUpdateWindowing();
// Set output flags for user application
g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
// Process NavCancel input (to close a popup, get back to parent, clear focus)
if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
{
if (g.ActiveId != 0)
{
ClearActiveID();
}
else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
{
// Exit child window
ImGuiWindow* child_window = g.NavWindow;
ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
IM_ASSERT(child_window->ChildId != 0);
FocusWindow(parent_window);
SetNavID(child_window->ChildId, 0);
g.NavIdIsAlive = false;
if (g.NavDisableMouseHover)
g.NavMousePosDirty = true;
}
else if (g.OpenPopupStack.Size > 0)
{
// Close open popup/menu
if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
ClosePopupToLevel(g.OpenPopupStack.Size - 1);
}
else if (g.NavLayer != 0)
{
// Leave the "menu" layer
NavRestoreLayer(0);
}
else
{
// Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
g.NavWindow->NavLastIds[0] = 0;
g.NavId = 0;
}
}
// Process manual activation request
g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
{
bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
if (g.ActiveId == 0 && activate_pressed)
g.NavActivateId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
g.NavActivateDownId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
g.NavActivatePressedId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
g.NavInputId = g.NavId;
}
if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
g.NavDisableHighlight = true;
if (g.NavActivateId != 0)
IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
g.NavMoveRequest = false;
// Process programmatic activation request
if (g.NavNextActivateId != 0)
g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
g.NavNextActivateId = 0;
// Initiate directional inputs request
const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
if (g.NavMoveRequestForward == ImGuiNavForward_None)
{
g.NavMoveDir = ImGuiDir_None;
g.NavMoveRequestFlags = 0;
if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
{
if ((allowed_dir_flags & (1<<ImGuiDir_Left)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
if ((allowed_dir_flags & (1<<ImGuiDir_Up)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp, ImGuiNavInput_KeyUp_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
if ((allowed_dir_flags & (1<<ImGuiDir_Down)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
}
g.NavMoveClipDir = g.NavMoveDir;
}
else
{
// Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
// (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
}
// Update PageUp/PageDown scroll
float nav_scoring_rect_offset_y = 0.0f;
if (nav_keyboard_active)
nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
// If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
if (g.NavMoveDir != ImGuiDir_None)
{
g.NavMoveRequest = true;
g.NavMoveDirLast = g.NavMoveDir;
}
if (g.NavMoveRequest && g.NavId == 0)
{
g.NavInitRequest = g.NavInitRequestFromMove = true;
g.NavInitResultId = 0;
g.NavDisableHighlight = false;
}
NavUpdateAnyRequestFlag();
// Scrolling
if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
{
// *Fallback* manual-scroll with Nav directional keys when window has no navigable item
ImGuiWindow* window = g.NavWindow;
const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
{
if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
}
// *Normal* Manual scroll with NavScrollXXX keys
// Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
if (scroll_dir.x != 0.0f && window->ScrollbarX)
{
SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
g.NavMoveFromClampedRefRect = true;
}
if (scroll_dir.y != 0.0f)
{
SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
g.NavMoveFromClampedRefRect = true;
}
}
// Reset search results
g.NavMoveResultLocal.Clear();
g.NavMoveResultLocalVisibleSet.Clear();
g.NavMoveResultOther.Clear();
// When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
{
ImGuiWindow* window = g.NavWindow;
ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
{
float pad = window->CalcFontSize() * 0.5f;
window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
g.NavId = 0;
}
g.NavMoveFromClampedRefRect = false;
}
// For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
//g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
g.NavScoringCount = 0;
#if IMGUI_DEBUG_NAV_RECTS
if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
#endif
}
void ImGui::StartMouseMovingWindow(ImGuiWindow* window) void ImGui::StartMouseMovingWindow(ImGuiWindow* window)
{ {
// Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows. // Set ActiveId even if the _NoMove flag is set. Without it, dragging away from a window with _NoMove would activate hover on other windows.
@ -7764,7 +7516,253 @@ void ImGui::NavMoveRequestTryWrapping(ImGuiWindow* window, ImGuiNavMoveFlags mov
} }
} }
// static void ImGui::NavUpdate()
{
ImGuiContext& g = *GImGui;
g.IO.WantSetMousePos = false;
#if 0
if (g.NavScoringCount > 0) printf("[%05d] NavScoringCount %d for '%s' layer %d (Init:%d, Move:%d)\n", g.FrameCount, g.NavScoringCount, g.NavWindow ? g.NavWindow->Name : "NULL", g.NavLayer, g.NavInitRequest || g.NavInitResultId != 0, g.NavMoveRequest);
#endif
// Set input source as Gamepad when buttons are pressed before we map Keyboard (some features differs when used with Gamepad vs Keyboard)
bool nav_keyboard_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableKeyboard) != 0;
bool nav_gamepad_active = (g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableGamepad) != 0 && (g.IO.BackendFlags & ImGuiBackendFlags_HasGamepad) != 0;
if (nav_gamepad_active)
if (g.IO.NavInputs[ImGuiNavInput_Activate] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Input] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Cancel] > 0.0f || g.IO.NavInputs[ImGuiNavInput_Menu] > 0.0f)
g.NavInputSource = ImGuiInputSource_NavGamepad;
// Update Keyboard->Nav inputs mapping
if (nav_keyboard_active)
{
#define NAV_MAP_KEY(_KEY, _NAV_INPUT) if (IsKeyDown(g.IO.KeyMap[_KEY])) { g.IO.NavInputs[_NAV_INPUT] = 1.0f; g.NavInputSource = ImGuiInputSource_NavKeyboard; }
NAV_MAP_KEY(ImGuiKey_Space, ImGuiNavInput_Activate );
NAV_MAP_KEY(ImGuiKey_Enter, ImGuiNavInput_Input );
NAV_MAP_KEY(ImGuiKey_Escape, ImGuiNavInput_Cancel );
NAV_MAP_KEY(ImGuiKey_LeftArrow, ImGuiNavInput_KeyLeft_ );
NAV_MAP_KEY(ImGuiKey_RightArrow,ImGuiNavInput_KeyRight_);
NAV_MAP_KEY(ImGuiKey_UpArrow, ImGuiNavInput_KeyUp_ );
NAV_MAP_KEY(ImGuiKey_DownArrow, ImGuiNavInput_KeyDown_ );
if (g.IO.KeyCtrl) g.IO.NavInputs[ImGuiNavInput_TweakSlow] = 1.0f;
if (g.IO.KeyShift) g.IO.NavInputs[ImGuiNavInput_TweakFast] = 1.0f;
if (g.IO.KeyAlt) g.IO.NavInputs[ImGuiNavInput_KeyMenu_] = 1.0f;
#undef NAV_MAP_KEY
}
memcpy(g.IO.NavInputsDownDurationPrev, g.IO.NavInputsDownDuration, sizeof(g.IO.NavInputsDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(g.IO.NavInputs); i++)
g.IO.NavInputsDownDuration[i] = (g.IO.NavInputs[i] > 0.0f) ? (g.IO.NavInputsDownDuration[i] < 0.0f ? 0.0f : g.IO.NavInputsDownDuration[i] + g.IO.DeltaTime) : -1.0f;
// Process navigation init request (select first/default focus)
if (g.NavInitResultId != 0 && (!g.NavDisableHighlight || g.NavInitRequestFromMove))
{
// Apply result from previous navigation init request (will typically select the first item, unless SetItemDefaultFocus() has been called)
IM_ASSERT(g.NavWindow);
if (g.NavInitRequestFromMove)
SetNavIDWithRectRel(g.NavInitResultId, g.NavLayer, g.NavInitResultRectRel);
else
SetNavID(g.NavInitResultId, g.NavLayer);
g.NavWindow->NavRectRel[g.NavLayer] = g.NavInitResultRectRel;
}
g.NavInitRequest = false;
g.NavInitRequestFromMove = false;
g.NavInitResultId = 0;
g.NavJustMovedToId = 0;
// Process navigation move request
if (g.NavMoveRequest && (g.NavMoveResultLocal.ID != 0 || g.NavMoveResultOther.ID != 0))
NavUpdateMoveResult();
// When a forwarded move request failed, we restore the highlight that we disabled during the forward frame
if (g.NavMoveRequestForward == ImGuiNavForward_ForwardActive)
{
IM_ASSERT(g.NavMoveRequest);
if (g.NavMoveResultLocal.ID == 0 && g.NavMoveResultOther.ID == 0)
g.NavDisableHighlight = false;
g.NavMoveRequestForward = ImGuiNavForward_None;
}
// Apply application mouse position movement, after we had a chance to process move request result.
if (g.NavMousePosDirty && g.NavIdIsAlive)
{
// Set mouse position given our knowledge of the navigated item position from last frame
if ((g.IO.ConfigFlags & ImGuiConfigFlags_NavEnableSetMousePos) && (g.IO.BackendFlags & ImGuiBackendFlags_HasSetMousePos))
{
if (!g.NavDisableHighlight && g.NavDisableMouseHover && g.NavWindow)
{
g.IO.MousePos = g.IO.MousePosPrev = NavCalcPreferredRefPos();
g.IO.WantSetMousePos = true;
}
}
g.NavMousePosDirty = false;
}
g.NavIdIsAlive = false;
g.NavJustTabbedId = 0;
IM_ASSERT(g.NavLayer == 0 || g.NavLayer == 1);
// Store our return window (for returning from Layer 1 to Layer 0) and clear it as soon as we step back in our own Layer 0
if (g.NavWindow)
NavSaveLastChildNavWindow(g.NavWindow);
if (g.NavWindow && g.NavWindow->NavLastChildNavWindow != NULL && g.NavLayer == 0)
g.NavWindow->NavLastChildNavWindow = NULL;
// Update CTRL+TAB and Windowing features (hold Square to move/resize/etc.)
NavUpdateWindowing();
// Set output flags for user application
g.IO.NavActive = (nav_keyboard_active || nav_gamepad_active) && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs);
g.IO.NavVisible = (g.IO.NavActive && g.NavId != 0 && !g.NavDisableHighlight) || (g.NavWindowingTarget != NULL) || g.NavInitRequest;
// Process NavCancel input (to close a popup, get back to parent, clear focus)
if (IsNavInputPressed(ImGuiNavInput_Cancel, ImGuiInputReadMode_Pressed))
{
if (g.ActiveId != 0)
{
ClearActiveID();
}
else if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow) && !(g.NavWindow->Flags & ImGuiWindowFlags_Popup) && g.NavWindow->ParentWindow)
{
// Exit child window
ImGuiWindow* child_window = g.NavWindow;
ImGuiWindow* parent_window = g.NavWindow->ParentWindow;
IM_ASSERT(child_window->ChildId != 0);
FocusWindow(parent_window);
SetNavID(child_window->ChildId, 0);
g.NavIdIsAlive = false;
if (g.NavDisableMouseHover)
g.NavMousePosDirty = true;
}
else if (g.OpenPopupStack.Size > 0)
{
// Close open popup/menu
if (!(g.OpenPopupStack.back().Window->Flags & ImGuiWindowFlags_Modal))
ClosePopupToLevel(g.OpenPopupStack.Size - 1);
}
else if (g.NavLayer != 0)
{
// Leave the "menu" layer
NavRestoreLayer(0);
}
else
{
// Clear NavLastId for popups but keep it for regular child window so we can leave one and come back where we were
if (g.NavWindow && ((g.NavWindow->Flags & ImGuiWindowFlags_Popup) || !(g.NavWindow->Flags & ImGuiWindowFlags_ChildWindow)))
g.NavWindow->NavLastIds[0] = 0;
g.NavId = 0;
}
}
// Process manual activation request
g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = 0;
if (g.NavId != 0 && !g.NavDisableHighlight && !g.NavWindowingTarget && g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
{
bool activate_down = IsNavInputDown(ImGuiNavInput_Activate);
bool activate_pressed = activate_down && IsNavInputPressed(ImGuiNavInput_Activate, ImGuiInputReadMode_Pressed);
if (g.ActiveId == 0 && activate_pressed)
g.NavActivateId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_down)
g.NavActivateDownId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && activate_pressed)
g.NavActivatePressedId = g.NavId;
if ((g.ActiveId == 0 || g.ActiveId == g.NavId) && IsNavInputPressed(ImGuiNavInput_Input, ImGuiInputReadMode_Pressed))
g.NavInputId = g.NavId;
}
if (g.NavWindow && (g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
g.NavDisableHighlight = true;
if (g.NavActivateId != 0)
IM_ASSERT(g.NavActivateDownId == g.NavActivateId);
g.NavMoveRequest = false;
// Process programmatic activation request
if (g.NavNextActivateId != 0)
g.NavActivateId = g.NavActivateDownId = g.NavActivatePressedId = g.NavInputId = g.NavNextActivateId;
g.NavNextActivateId = 0;
// Initiate directional inputs request
const int allowed_dir_flags = (g.ActiveId == 0) ? ~0 : g.ActiveIdAllowNavDirFlags;
if (g.NavMoveRequestForward == ImGuiNavForward_None)
{
g.NavMoveDir = ImGuiDir_None;
g.NavMoveRequestFlags = 0;
if (g.NavWindow && !g.NavWindowingTarget && allowed_dir_flags && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs))
{
if ((allowed_dir_flags & (1<<ImGuiDir_Left)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadLeft, ImGuiNavInput_KeyLeft_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Left;
if ((allowed_dir_flags & (1<<ImGuiDir_Right)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadRight,ImGuiNavInput_KeyRight_,ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Right;
if ((allowed_dir_flags & (1<<ImGuiDir_Up)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadUp, ImGuiNavInput_KeyUp_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Up;
if ((allowed_dir_flags & (1<<ImGuiDir_Down)) && IsNavInputPressedAnyOfTwo(ImGuiNavInput_DpadDown, ImGuiNavInput_KeyDown_, ImGuiInputReadMode_Repeat)) g.NavMoveDir = ImGuiDir_Down;
}
g.NavMoveClipDir = g.NavMoveDir;
}
else
{
// Forwarding previous request (which has been modified, e.g. wrap around menus rewrite the requests with a starting rectangle at the other side of the window)
// (Preserve g.NavMoveRequestFlags, g.NavMoveClipDir which were set by the NavMoveRequestForward() function)
IM_ASSERT(g.NavMoveDir != ImGuiDir_None && g.NavMoveClipDir != ImGuiDir_None);
IM_ASSERT(g.NavMoveRequestForward == ImGuiNavForward_ForwardQueued);
g.NavMoveRequestForward = ImGuiNavForward_ForwardActive;
}
// Update PageUp/PageDown scroll
float nav_scoring_rect_offset_y = 0.0f;
if (nav_keyboard_active)
nav_scoring_rect_offset_y = NavUpdatePageUpPageDown(allowed_dir_flags);
// If we initiate a movement request and have no current NavId, we initiate a InitDefautRequest that will be used as a fallback if the direction fails to find a match
if (g.NavMoveDir != ImGuiDir_None)
{
g.NavMoveRequest = true;
g.NavMoveDirLast = g.NavMoveDir;
}
if (g.NavMoveRequest && g.NavId == 0)
{
g.NavInitRequest = g.NavInitRequestFromMove = true;
g.NavInitResultId = 0;
g.NavDisableHighlight = false;
}
NavUpdateAnyRequestFlag();
// Scrolling
if (g.NavWindow && !(g.NavWindow->Flags & ImGuiWindowFlags_NoNavInputs) && !g.NavWindowingTarget)
{
// *Fallback* manual-scroll with Nav directional keys when window has no navigable item
ImGuiWindow* window = g.NavWindow;
const float scroll_speed = ImFloor(window->CalcFontSize() * 100 * g.IO.DeltaTime + 0.5f); // We need round the scrolling speed because sub-pixel scroll isn't reliably supported.
if (window->DC.NavLayerActiveMask == 0x00 && window->DC.NavHasScroll && g.NavMoveRequest)
{
if (g.NavMoveDir == ImGuiDir_Left || g.NavMoveDir == ImGuiDir_Right)
SetWindowScrollX(window, ImFloor(window->Scroll.x + ((g.NavMoveDir == ImGuiDir_Left) ? -1.0f : +1.0f) * scroll_speed));
if (g.NavMoveDir == ImGuiDir_Up || g.NavMoveDir == ImGuiDir_Down)
SetWindowScrollY(window, ImFloor(window->Scroll.y + ((g.NavMoveDir == ImGuiDir_Up) ? -1.0f : +1.0f) * scroll_speed));
}
// *Normal* Manual scroll with NavScrollXXX keys
// Next movement request will clamp the NavId reference rectangle to the visible area, so navigation will resume within those bounds.
ImVec2 scroll_dir = GetNavInputAmount2d(ImGuiNavDirSourceFlags_PadLStick, ImGuiInputReadMode_Down, 1.0f/10.0f, 10.0f);
if (scroll_dir.x != 0.0f && window->ScrollbarX)
{
SetWindowScrollX(window, ImFloor(window->Scroll.x + scroll_dir.x * scroll_speed));
g.NavMoveFromClampedRefRect = true;
}
if (scroll_dir.y != 0.0f)
{
SetWindowScrollY(window, ImFloor(window->Scroll.y + scroll_dir.y * scroll_speed));
g.NavMoveFromClampedRefRect = true;
}
}
// Reset search results
g.NavMoveResultLocal.Clear();
g.NavMoveResultLocalVisibleSet.Clear();
g.NavMoveResultOther.Clear();
// When we have manually scrolled (without using navigation) and NavId becomes out of bounds, we project its bounding box to the visible area to restart navigation within visible items
if (g.NavMoveRequest && g.NavMoveFromClampedRefRect && g.NavLayer == 0)
{
ImGuiWindow* window = g.NavWindow;
ImRect window_rect_rel(window->InnerMainRect.Min - window->Pos - ImVec2(1,1), window->InnerMainRect.Max - window->Pos + ImVec2(1,1));
if (!window_rect_rel.Contains(window->NavRectRel[g.NavLayer]))
{
float pad = window->CalcFontSize() * 0.5f;
window_rect_rel.Expand(ImVec2(-ImMin(window_rect_rel.GetWidth(), pad), -ImMin(window_rect_rel.GetHeight(), pad))); // Terrible approximation for the intent of starting navigation from first fully visible item
window->NavRectRel[g.NavLayer].ClipWith(window_rect_rel);
g.NavId = 0;
}
g.NavMoveFromClampedRefRect = false;
}
// For scoring we use a single segment on the left side our current item bounding box (not touching the edge to avoid box overlap with zero-spaced items)
ImRect nav_rect_rel = (g.NavWindow && !g.NavWindow->NavRectRel[g.NavLayer].IsInverted()) ? g.NavWindow->NavRectRel[g.NavLayer] : ImRect(0,0,0,0);
g.NavScoringRectScreen = g.NavWindow ? ImRect(g.NavWindow->Pos + nav_rect_rel.Min, g.NavWindow->Pos + nav_rect_rel.Max) : GetViewportRect();
g.NavScoringRectScreen.TranslateY(nav_scoring_rect_offset_y);
g.NavScoringRectScreen.Min.x = ImMin(g.NavScoringRectScreen.Min.x + 1.0f, g.NavScoringRectScreen.Max.x);
g.NavScoringRectScreen.Max.x = g.NavScoringRectScreen.Min.x;
IM_ASSERT(!g.NavScoringRectScreen.IsInverted()); // Ensure if we have a finite, non-inverted bounding box here will allows us to remove extraneous ImFabs() calls in NavScoreItem().
//g.OverlayDrawList.AddRect(g.NavScoringRectScreen.Min, g.NavScoringRectScreen.Max, IM_COL32(255,200,0,255)); // [DEBUG]
g.NavScoringCount = 0;
#if IMGUI_DEBUG_NAV_RECTS
if (g.NavWindow) { for (int layer = 0; layer < 2; layer++) GetOverlayDrawList()->AddRect(g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Min, g.NavWindow->Pos + g.NavWindow->NavRectRel[layer].Max, IM_COL32(255,200,0,255)); } // [DEBUG]
if (g.NavWindow) { ImU32 col = (g.NavWindow->HiddenFrames == 0) ? IM_COL32(255,0,255,255) : IM_COL32(255,0,0,255); ImVec2 p = NavCalcPreferredRefPos(); char buf[32]; ImFormatString(buf, 32, "%d", g.NavLayer); g.OverlayDrawList.AddCircleFilled(p, 3.0f, col); g.OverlayDrawList.AddText(NULL, 13.0f, p + ImVec2(8,-4), col, buf); }
#endif
}
static void ImGui::NavUpdateMoveResult() static void ImGui::NavUpdateMoveResult()
{ {

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